A north London measles outbreak has infected more than 60 children, raising fears of wider transmission across the capital amid persistently low vaccination rates. The cases have been reported across seven schools and a nursery in the borough of Enfield, with several children requiring hospital treatment, according to reports.
Public health officials have warned that the outbreak could escalate rapidly, particularly given London’s high levels of daily movement between boroughs. Measles is one of the most infectious diseases in the world and can spread from one infected person to up to 18 unvaccinated individuals.
Schools and Nursery Affected in Enfield
The outbreak was identified in multiple educational settings in Enfield, prompting urgent public health measures. Some of the infected children have been treated in hospital, highlighting concerns about the severity of the illness and its potential complications.
Dudu Sher-Arami, Enfield’s director of public health, has begun writing directly to parents across the borough to warn them about the risks. She said the outbreak posed a serious threat not only locally but across the capital.
Because Londoners regularly travel across boroughs for work, education and leisure, Sher-Arami warned there was a real danger of a “much greater and bigger pan-London outbreak” if the virus is not contained quickly.
Low MMR Uptake Linked to Rising Risk
Health officials believe the north London measles outbreak is linked to low uptake of the MMR vaccine in the capital. Sher-Arami said London has “one of the lowest, if not the lowest, vaccination uptake rates” in England.
In Enfield, more than one in five children are not fully vaccinated against measles, mumps and rubella by the age of five. This leaves large numbers of children vulnerable and undermines herd immunity, making outbreaks more likely.
Sher-Arami said: “It is possible for it to grow. We know that measles has got some very nasty complications. It can cause deafness. It can cause brain damage and one in five children can need hospital treatment.”
Emergency Vaccination Clinics Rolled Out
In response to the outbreak, temporary vaccination clinics have been set up in schools and community locations across Enfield to boost MMR uptake quickly. Health officials are urging parents to check their children’s vaccination status and attend clinics if doses have been missed.
The NHS says measles usually begins with cold-like symptoms, such as fever, cough and runny nose, followed by a rash a few days later. Some patients may also develop small white spots inside the mouth. While many recover, measles can lead to serious complications, particularly in young children.
National Campaign to Counter Vaccine Hesitancy
The outbreak comes as the government prepares to launch a nationwide campaign promoting childhood vaccinations. The campaign is expected to include advertising on social media, YouTube and radio, aimed at countering vaccine scepticism and misinformation.
Public health leaders say such efforts are critical as vaccination rates have stagnated in recent years, particularly in urban areas.
UK Loses Measles Elimination Status
Last month, the World Health Organization confirmed that the UK is no longer considered to have eliminated measles, after transmission was re-established in 2024. The loss of elimination status followed a surge in cases and a prolonged plateau in vaccination coverage.
From 2021 to 2023, the UK had been classified as having eliminated measles, meaning sustained transmission had been interrupted. However, in 2024, 3,681 measles cases were recorded nationwide, reversing that progress.
Vaccination Levels Below Herd Immunity Threshold
The World Health Organization recommends that at least 95% of children receive both doses of the MMR vaccine to achieve herd immunity.
Figures from the UK Health Security Agency show that in 2024–25, only 91.9% of five-year-olds in the UK had received at least one dose of the MMR vaccine. This level is unchanged from the previous year and is the lowest since 2010–11.
Even more concerning, just 83.7% of five-year-olds had received both MMR doses, the lowest level since 2009–10. Public health experts warn that unless coverage improves, further outbreaks are likely, particularly in areas with dense populations such as London.
Why Measles Remains a Serious Threat
Measles was once close to elimination in the UK due to widespread vaccination, but declining uptake has allowed the virus to regain a foothold. The disease is highly contagious and can spread through coughing, sneezing and close contact, with the virus lingering in the air for hours.
Health officials stress that vaccination remains the most effective way to protect children and prevent outbreaks like the one now affecting north London.